CN112433968B - Controller sharing synchronization method and device - Google Patents
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Abstract
The invention discloses a controller sharing synchronization method and a controller sharing synchronization device, wherein the method comprises the following steps: respectively loading data to be transmitted to a buffer register by a baseboard management controller of one master controller and a plurality of slave controllers; broadcasting data to be transmitted to a plurality of slave controllers by the master controller through a shared bus, and respectively receiving the data to be transmitted broadcasted by the slave controllers to write the data into a buffer register; the complex programmable logic device of the master controller sequentially sends data synchronization requests to each slave controller through a shared bus; in response to receiving a data synchronization request from a slave controller, the slave controller broadcasts data to be transmitted to the master controller and a plurality of other slave controllers, and receives the data to be transmitted broadcast by the master controller and the plurality of other slave controllers respectively to write into the buffer register. The invention can release BMC resources from data sharing and synchronization, and improve the response speed of data transmission.
Description
Technical Field
The present invention relates to the field of storage control, and in particular, to a method and an apparatus for sharing and synchronizing controllers.
Background
The storage controller forms double-control, four-control, eight-control and even sixteen-control architecture setting ten years ago, and services are processed among multiple controls, so that the service performance is greatly improved. In addition, after one controller is crashed suddenly, the other controller takes over the service, so that the data safety and the disaster tolerance performance of the equipment are greatly improved. Each controller is managed by a BMC (baseboard management controller), so that the upper storage software is provided for reading and writing access, and the state information of relevant equipment in the controller and the shared information among multiple controllers are collected.
In the four-control scenario, the local control BMC needs to acquire the state information of the devices in the local controller in real time, and also needs to master the state information of the devices corresponding to other controllers in real time. Therefore, in a four-control or eight-control scenario, data synchronization, high reliability and quick and immediate response between the BMCs become more and more important, because much information is key information directly causing the establishment of the upper-layer storage software cluster.
Data synchronization can be completely finished among a plurality of controllers BMC, but the first BMC adopts a simplified linux system, and the system inevitably has the problems of program runaway and the like; secondly, with the development of modern storage, the BMC code is required to be more and more in security and error prevention and functions, the BMC is too fat, equipment information is collected by adopting a polling mode, the polling period is limited, and the self-resource and code function quantity in the BMC is limited, so that the response speed is low; thirdly, from the design level, the BMC handles management policies exclusively, and the state information collection work of the device results from the BMC processing involving unclear logic.
There is currently no effective solution to the problem in the prior art that BMCs are not suitable for performing data synchronization for controllers.
Disclosure of Invention
In view of this, an object of the embodiments of the present invention is to provide a method and an apparatus for controller sharing synchronization, which can release BMC resources from data sharing and synchronization, and improve response speed of data transmission.
In view of the foregoing, a first aspect of the embodiments of the present invention provides a controller sharing synchronization method, including performing the following steps in a loop:
loading data to be transmitted to respective buffer registers by the baseboard management controllers of a master controller and a plurality of slave controllers which are connected to a shared bus in parallel;
the method comprises the steps that a master controller broadcasts data to be transmitted to a plurality of slave controllers through a shared bus, and the master controller receives the data to be transmitted broadcasted by the slave controllers through the shared bus respectively so as to write the data into a buffer register of the master controller;
the complex programmable logic device of the master controller sequentially sends data synchronization requests to each slave controller through a shared bus;
in response to receiving a data synchronization request from a slave controller, broadcasting data to be transmitted to the master controller and a plurality of other slave controllers by the slave controller via a shared bus, and respectively receiving the data to be transmitted broadcast by the master controller and the plurality of other slave controllers by the slave controller via the shared bus to write the data to be transmitted into buffer registers of the slave controller;
the master controller and the plurality of slave controllers are enabled to process the data obtained from the buffer registers respectively so as to realize sharing and synchronization of the data.
In some embodiments, the issuing, by the complex programmable logic device of the master controller, the data synchronization request to each of the slave controllers in turn comprises: the master determines the request periods and waits for at least one request period to send a data synchronization request to the next slave after sending a data synchronization request to one slave.
In some embodiments, each buffer register is configured to have a plurality of memory columns, and the plurality of memory columns are in one-to-one correspondence with one master controller and a plurality of slave controllers;
the method for loading the data to be transmitted to the respective buffer registers by the baseboard management controllers of the master controller and the plurality of slave controllers which are connected to the shared bus in parallel comprises the following steps: the data to be transmitted are loaded into a buffer register respectively on a storage column corresponding to one master controller or one of a plurality of slave controllers.
In some embodiments, receiving, by the master controller via the shared bus, respectively, data to be transmitted broadcast by the plurality of slave controllers to write to the buffer registers of the master controller comprises: respectively writing the data to be transmitted broadcasted by the plurality of slave controllers into storage columns, corresponding to the plurality of slave controllers, in a buffer register of the master controller;
receiving, by the slave controller via the shared bus, data to be transmitted broadcast by the master controller and a plurality of other slave controllers, respectively, to write to the buffer registers of the slave controller, includes: and respectively writing the data to be transmitted broadcasted by the master controller and the other slave controllers into the buffer registers of the slave controllers, wherein the storage columns correspond to the master controller and the other slave controllers respectively.
In some embodiments, the method further comprises:
the method comprises the steps that when a master controller broadcasts data to be transmitted to a plurality of slave controllers through a shared bus, check data of the data to be transmitted are calculated, and the check data are broadcast to the slave controllers along with the data to be transmitted;
the method comprises the steps that when the master controller receives data to be transmitted broadcasted by the multiple slave controllers through a shared bus, the master controller also receives check data of the data to be transmitted, the data to be transmitted are checked based on the check data, and the loss of the transmission data is determined in response to the failure of the check;
when the slave controller broadcasts the data to be transmitted to the master controller and the plurality of other slave controllers through the shared bus, the slave controller also calculates the check data of the data to be transmitted, and broadcasts the check data to the master controller and the plurality of other slave controllers together with the data to be transmitted;
the slave controller receives the data to be transmitted broadcast by the master controller and the plurality of other slave controllers via the shared bus, respectively, and also receives the verification data of the data to be transmitted, verifies the data to be transmitted based on the verification data, and determines that the transmission data is lost in response to a verification failure.
In some embodiments, the shared bus comprises a first bus and a second bus; transmitting via the shared bus includes: the data is transmitted simultaneously on the first bus and the second bus, and the transmission is deemed successful in response to the data transmitted on the first bus and the second bus being the same, and the transmission is deemed failed in response to the data transmitted on the first bus and the second bus being different.
In some embodiments, the buffer registers of the master controller and the plurality of slave controllers are registers of the complex programmable logic device of the master controller and the plurality of slave controllers.
A second aspect of an embodiment of the present invention provides a controller sharing synchronization apparatus, including:
a processor; and
a memory storing program code executable by the processor, the program code when executed looping through the steps of:
loading data to be transmitted to respective buffer registers by the baseboard management controllers of a master controller and a plurality of slave controllers which are connected to a shared bus in parallel;
the method comprises the steps that a master controller broadcasts data to be transmitted to a plurality of slave controllers through a shared bus, and the master controller receives the data to be transmitted broadcasted by the slave controllers through the shared bus respectively so as to write the data into a buffer register of the master controller;
the complex programmable logic device of the master controller sequentially sends data synchronization requests to each slave controller through a shared bus;
in response to the slave controller receiving a data synchronization request, the slave controller broadcasts the data to be transmitted to the master controller and a plurality of other slave controllers through a shared bus, and the slave controller respectively receives the data to be transmitted broadcast by the master controller and the plurality of other slave controllers through the shared bus to write the data to be transmitted into a buffer register of the slave controller;
the master controller and the slave controllers are enabled to process the data obtained from the buffer registers respectively so as to realize the sharing and synchronization of the data.
In some embodiments, each buffer register is configured to have a plurality of storage columns, and the plurality of storage columns correspond to one master controller and a plurality of slave controllers in a one-to-one manner;
the method for loading the data to be transmitted to the respective buffer registers by the baseboard management controllers of the master controller and the plurality of slave controllers which are connected to the shared bus in parallel comprises the following steps: loading data to be transmitted to a storage column corresponding to one master controller or one of a plurality of slave controllers in a buffer register respectively;
receiving, by the master controller via the shared bus, data to be transmitted broadcast by the plurality of slave controllers, respectively, to write to the buffer register of the master controller, includes: respectively writing the data to be transmitted broadcasted by the plurality of slave controllers into the buffer registers of the master controller and the storage columns corresponding to the plurality of slave controllers;
receiving, by the slave controller via the shared bus, data to be transmitted broadcast by the master controller and a plurality of other slave controllers, respectively, to write to the buffer registers of the slave controller, includes: and respectively writing the data to be transmitted broadcasted by the master controller and the other slave controllers into the buffer registers of the slave controllers, wherein the storage columns correspond to the master controller and the other slave controllers respectively.
In some embodiments, the steps further comprise:
the method comprises the steps that when a master controller broadcasts data to be transmitted to a plurality of slave controllers through a shared bus, check data of the data to be transmitted are calculated, and the check data are broadcast to the slave controllers together with the data to be transmitted;
the method comprises the steps that while data to be transmitted broadcasted by a plurality of slave controllers are respectively received by a master controller through a shared bus, checking data of the data to be transmitted are also received, the data to be transmitted are checked based on the checking data, and the transmission data are determined to be lost in response to the failure of checking;
when the slave controller broadcasts the data to be transmitted to the master controller and the plurality of other slave controllers through the shared bus, the slave controller also calculates the check data of the data to be transmitted, and broadcasts the check data to the master controller and the plurality of other slave controllers together with the data to be transmitted;
the slave controller receives data to be transmitted broadcast by the master controller and the plurality of other slave controllers via the shared bus, respectively, and also receives check data of the data to be transmitted, checks the data to be transmitted based on the check data, and determines that the transmission data is lost in response to a failure in the checking.
The invention has the following beneficial technical effects: the controller sharing synchronization method and the controller sharing synchronization device provided by the embodiment of the invention respectively load data to be transmitted to respective buffer registers through the baseboard management controllers of the master controller and the plurality of slave controllers which are connected to the shared bus in parallel; the method comprises the steps that a master controller broadcasts data to be transmitted to a plurality of slave controllers through a shared bus, and the master controller receives the data to be transmitted broadcasted by the slave controllers through the shared bus respectively so as to write the data into a buffer register of the master controller; the complex programmable logic device of the master controller sequentially sends data synchronization requests to each slave controller through a shared bus; in response to receiving a data synchronization request from a slave controller, broadcasting data to be transmitted to the master controller and a plurality of other slave controllers by the slave controller via a shared bus, and respectively receiving the data to be transmitted broadcast by the master controller and the plurality of other slave controllers by the slave controller via the shared bus to write the data to be transmitted into a buffer register of the controller; the technical scheme that the master controller and the slave controllers respectively process the data obtained from the buffer registers of the master controller and the slave controllers to realize data sharing and synchronization can release BMC resources from data sharing and synchronization and improve the response speed of data transmission.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic flow chart of a method for sharing synchronization of controllers according to the present invention;
FIG. 2 is a detailed flowchart of a controller sharing synchronization method according to the present invention;
FIG. 3 is a logic state diagram of a controller according to the present invention;
FIG. 4 is a schematic diagram of a shared bus according to the method for sharing synchronization among controllers of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the following embodiments of the present invention are described in further detail with reference to the accompanying drawings.
It should be noted that all expressions using "first" and "second" in the embodiments of the present invention are used for distinguishing two entities with the same name but different names or different parameters, and it should be noted that "first" and "second" are only used for convenience of expression and should not be construed as a limitation to the embodiments of the present invention, and no description is given in the following embodiments.
In view of the above, a first aspect of the embodiments of the present invention proposes an embodiment of a controller sharing synchronization method for releasing BMC resources from data sharing and synchronization and improving response speed of data transmission. Fig. 1 is a schematic flowchart illustrating a controller sharing synchronization method according to the present invention.
The controller sharing synchronization method, as shown in fig. 1, includes connecting a master controller and a plurality of slave controllers in parallel to a shared bus, and cyclically executing the following steps to share and synchronize data between the master controller and the plurality of slave controllers via the shared bus:
step S101, respectively loading data to be transmitted of one master controller and a plurality of slave controllers to buffer registers of the master controller and the plurality of slave controllers by the baseboard management controllers of the master controller and the plurality of slave controllers;
step S103, the master controller broadcasts the data to be transmitted of the master controller to the plurality of slave controllers through the shared bus, and the master controller receives the data to be transmitted broadcasted by the plurality of slave controllers from the plurality of slave controllers through the shared bus respectively so as to write the data to be transmitted into a buffer register of the master controller;
step S105, the complex programmable logic device of the master controller sends data synchronization requests to each slave controller in sequence through a shared bus;
step S107, in response to a slave controller receiving a data synchronization request, the controller broadcasts the data to be transmitted of the controller to the master controller and the other slave controllers through the shared bus, and the controller receives the data to be transmitted broadcasted by the master controller and the other slave controllers from the master controller and the other slave controllers through the shared bus respectively so as to write the data to the buffer register of the controller;
step S109, enabling the master controller and the slave controllers to process the data obtained from their respective buffer registers respectively to implement sharing and synchronization of data.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above may be implemented by instructing relevant hardware by a computer program, and the program may be stored in a computer-readable storage medium, and when executed, may include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), a Random Access Memory (RAM), or the like. Embodiments of the computer program may achieve the same or similar effects as any of the preceding method embodiments corresponding thereto.
In some embodiments, the issuing, by the complex programmable logic device of the master controller, the data synchronization request to each of the slave controllers in turn comprises: the master determines the request periods and waits for at least one request period to send a data synchronization request to the next slave after sending a data synchronization request to one slave.
In some embodiments, each buffer register is configured to have a plurality of storage columns, and the plurality of storage columns correspond to one master controller and a plurality of slave controllers in a one-to-one manner;
the method for loading the data to be transmitted of one master controller and a plurality of slave controllers to the buffer registers of the master controller and the plurality of slave controllers respectively comprises the following steps: the data to be transmitted are loaded into a buffer register respectively on a storage column corresponding to one master controller or one of a plurality of slave controllers.
In some embodiments, receiving data to be transmitted broadcast by the plurality of slave controllers from the plurality of slave controllers, respectively, to write to the buffer register of the master controller includes: respectively writing the data to be transmitted broadcasted by the plurality of slave controllers into storage columns, corresponding to the plurality of slave controllers, in a buffer register of the master controller;
receiving data to be transmitted broadcast by the master controller and the plurality of other slave controllers to be written into buffer registers of the controllers from the master controller and the plurality of other slave controllers, respectively, includes: and respectively writing the data to be transmitted broadcasted by the master controller and the other slave controllers into storage columns, corresponding to the master controller and the other slave controllers, in a buffer register of the controller.
In some embodiments, when the master controller broadcasts the data to be transmitted of the master controller to the plurality of slave controllers, the master controller also calculates the check data of the data to be transmitted, and broadcasts the check data to the plurality of slave controllers along with the data to be transmitted; the method comprises the steps that when the master controller receives data to be transmitted broadcasted by the slave controllers from the slave controllers respectively, the master controller also receives check data of the data to be transmitted, the data to be transmitted are checked based on the check data, and the loss of the transmission data is determined in response to the failure of the check;
when the controller broadcasts the data to be transmitted to the master controller and the other slave controllers, the controller also calculates the check data of the data to be transmitted, and broadcasts the check data to the master controller and the other slave controllers along with the data to be transmitted; the controller receives data to be transmitted broadcast by the master controller and the plurality of other slave controllers from the master controller and the plurality of other slave controllers, respectively, and also receives verification data of the data to be transmitted, verifies the data to be transmitted based on the verification data, and determines that the transmission data is lost in response to a verification failure.
In some embodiments, the shared bus comprises a first bus and a second bus; transmitting via the shared bus includes: the data is transmitted simultaneously on the first bus and the second bus, and the transmission is deemed successful in response to the data transmitted on the first bus and the second bus being the same, and the transmission is deemed failed in response to the data transmitted on the first bus and the second bus being different.
In some embodiments, the buffer registers of one master controller and multiple slave controllers are registers of a complex programmable logic device of one master controller and multiple slave controllers.
The following further illustrates embodiments of the invention in terms of specific examples.
Firstly, the device identification is confirmed or the BMC, the upper layer software and other modes are used for determining which device is the host. The data sharing and synchronization is performed sequentially after the determination of the master, see fig. 2. There is one (BMC read buffer) per CPLD in fig. 2. In columns. The black columns represent the present node information. According to the BMC requirement, 8 pieces of status information are required to be provided, one piece of status information is one bit (for example, master-slave status, in-place status, BMC monitoring status). One block represents the CRC check of its corresponding column, also for BMC read.
As shown in FIG. 2, first, the host sends a command for synchronizing data, broadcasting the value of abcdefgh at the moment of the local node; and simultaneously, the local node updates the BMC to read the abcdefgh value of the node column corresponding to the buffer area, and simultaneously starts a 1ms timer. And after receiving the broadcast, other CPLDs carry out CRC check. And when the check fails, setting CRC bits corresponding to the node columns to be 1 according to the sending equipment address in the frame. And when the check is correct, setting the CRC bit corresponding to the node column to be 0 according to the sending equipment address in the frame, and updating the column abcdefgh value corresponding to the BMC reading buffer zone.
After the host 1ms timer expires, the host sends a synchronization request with id 1 (if id is consistent with the host id, the host skips), and simultaneously starts the 1ms timer. Then, the slave computer with id 1 sends a synchronous data command, and broadcasts a local node, namely the abcdefgh value at the moment; and meanwhile, the local node updates the BMC to read the value of the node column abcdefgh corresponding to the buffer area. And after receiving the broadcast, other CPLDs carry out CRC check. And when the check fails, setting CRC bits corresponding to the node columns to be 1 according to the sending equipment address in the frame. And when the check is correct, setting the CRC bit corresponding to the node column to be 0 according to the sending equipment address in the frame, and updating the column abcdefgh value corresponding to the BMC reading buffer zone.
After the 1ms timer of the host is full, the host sends a synchronization request to the id 2 (if the id is consistent with the id of the host, the host skips), and simultaneously starts the 1ms timer. Then, the slave computer with id 2 sends a synchronous data command, and broadcasts a local node, namely the abcdefgh value at the moment; and meanwhile, the local node updates the BMC to read the value of the node column abcdefgh corresponding to the buffer area. And after receiving the broadcast, other CPLDs carry out CRC check. And when the check fails, setting CRC bits corresponding to the node columns to be 1 according to the sending equipment address in the frame. And when the check is correct, setting the CRC bit corresponding to the node column to be 0 according to the 'sending equipment address' in the frame, and updating the abcdefgh value of the column corresponding to the BMC reading buffer area.
After the 1ms timer of the host is full, the host sends a synchronization request to the id 3 (if the id is consistent with the id of the host, the host skips), and simultaneously starts the 1ms timer. A slave computer with id being 3 sends a synchronous data command, and broadcasts a local node, namely the abcdefgh value at the moment; and meanwhile, the local node updates the BMC to read the value of the node column abcdefgh corresponding to the buffer area. And after receiving the broadcast, other CPLDs carry out CRC check. And when the check fails, setting the CRC bit corresponding to the node column to be 1 according to the sending equipment address in the frame. And when the check is correct, setting the CRC bit corresponding to the node column to be 0 according to the 'sending equipment address' in the frame, and updating the abcdefgh value of the column corresponding to the BMC reading buffer area.
This approach ensures that all data is consistent when four or eight BMCs read their CPLD (complex logic programmable device) registers. This results in a high reliability of the method. Data synchronization is achieved entirely by the CPLD, and each refresh data cycle can be set at a fixed 4ms +80us by virtue of the real-time operating characteristics of the CPLD logic.
The CPLD logic state machine is shown in detail in FIG. 3. In fig. 3:
1 represents the completion of power-on reset;
2, the Device ID acquisition fails or is illegal, or the data of the two buses are inconsistent;
8 indicates that the Device ID acquisition is successful and legal but the match-enable bit is 0;
4 indicates no clock and data change in both buses (200ms + Device ID 10 ms);
6, after the master command is sent out (Device ID is 1ms), no clock and no data change exists in the two buses;
7, data change (clock or data) occurs in at least one of the two buses after the master command is sent out (Device ID x 1 ms);
9 indicates 1ms timed-out;
11, the synchronous data in self data boardcoast is completely transmitted;
10. 12, 14, 17 indicate that a master-slave manual setup command is received by the upper layer BMC, or that the BMC hangs up (default BMC is normal within 3 minutes of power-on) or that there are multiple masters occurring for 3 consecutive cycles. Or the data of the use bus is inconsistent with the data of the backup bus;
13 indicates that the 1ms timer is full and not all slave nodes have been traversed. (the goal is to cycle through all slave nodes);
16 indicates that the 1ms timer is full and all slave nodes have been traversed;
17 denotes receipt of a "synchronization request" from the host;
18 indicates "synchronize data" command completion;
21 indicates that there is no clock and data change on both buses for 200 ms.
In the embodiment of the invention, four or eight controllers are mounted on the shared bus. Each device may be a master or a slave. Therefore, the physical connection mode can be arbitrarily expanded to eight controls and sixteen controls. There are multiple devices on the bus. Only one master can exist at a time. The communication protocol between the CPLDs needs to be customized. To increase the reliability of the data, one more bus is backed up, as shown in fig. 4. Each time a master device sends a command or data, it needs to be done on both buses simultaneously. The receiving device can only carry out subsequent operations after detecting the same data on the data of the two buses, otherwise, the receiving device discards and reports an error.
In addition, in order to increase the reliability of the data, the embodiment of the invention adds one 8-bit CRC at the tail of each sending period or each receiving period, and when the verification fails, the data frame is lost and an error is reported.
It can be seen from the foregoing embodiments that, in the controller sharing synchronization method provided in the embodiments of the present invention, the baseboard management controllers of the master controller and the slave controllers respectively load the data to be transmitted of the master controller and the slave controllers to the buffer registers of the master controller and the slave controllers; broadcasting the data to be transmitted of the master controller to the plurality of slave controllers by the master controller through the shared bus, and respectively receiving the data to be transmitted broadcasted by the plurality of slave controllers from the plurality of slave controllers through the shared bus by the master controller so as to write the data to be transmitted into a buffer register of the master controller; the complex programmable logic device of the master controller sequentially sends data synchronization requests to each slave controller through a shared bus; in response to one slave controller receiving a data synchronization request, broadcasting data to be transmitted of the controller to the master controller and a plurality of other slave controllers by the controller via a shared bus, and respectively receiving the data to be transmitted broadcast by the master controller and the plurality of other slave controllers from the master controller and the plurality of other slave controllers via the shared bus by the controller to write the data to be transmitted into a buffer register of the controller; the technical scheme that one master controller and a plurality of slave controllers respectively process data obtained from respective buffer registers of the master controller and the slave controllers to realize data sharing and synchronization can release BMC resources from data sharing and synchronization and improve the response speed of data transmission.
It should be particularly noted that, the steps in the embodiments of the controller-sharing synchronization method described above can be mutually intersected, replaced, added, or deleted, and therefore, these reasonable permutations and combinations should also fall within the scope of the present invention, and should not limit the scope of the present invention to the described embodiments.
In view of the above object, according to a second aspect of the embodiments of the present invention, an embodiment of a controller-shared synchronization apparatus is provided, which releases BMC resources from data sharing and synchronization, and improves response speed of data transmission. The controller sharing synchronization device includes:
a shared bus on which a master controller and a plurality of slave controllers are mounted;
a processor; and
a memory storing processor executable program code which when executed and executed loops performing the following steps to share and synchronize data between a master controller and a plurality of slave controllers via a shared bus:
respectively loading data to be transmitted of one master controller and a plurality of slave controllers to buffer registers of the master controller and the plurality of slave controllers by baseboard management controllers of the master controller and the plurality of slave controllers;
broadcasting data to be transmitted of the master controller to the plurality of slave controllers by the master controller through the shared bus, and respectively receiving the data to be transmitted broadcasted by the plurality of slave controllers from the plurality of slave controllers through the shared bus by the master controller so as to write the data to be transmitted into a buffer register of the master controller;
the complex programmable logic device of the master controller sequentially sends data synchronization requests to each slave controller through a shared bus;
in response to a slave controller receiving a data synchronization request, the controller broadcasts data to be transmitted of the controller to the master controller and a plurality of other slave controllers through a shared bus, and the controller receives the data to be transmitted broadcast by the master controller and the plurality of other slave controllers from the master controller and the plurality of other slave controllers through the shared bus respectively so as to write the data to a buffer register of the controller;
the master controller and the slave controllers are enabled to process the data obtained from the buffer registers respectively so as to realize the sharing and synchronization of the data.
In some embodiments, each buffer register is configured to have a plurality of memory columns, and the plurality of memory columns are in one-to-one correspondence with one master controller and a plurality of slave controllers;
the method for loading the data to be transmitted of one master controller and a plurality of slave controllers to the buffer registers of the master controller and the plurality of slave controllers respectively comprises the following steps: loading data to be transmitted to a storage column corresponding to one master controller or one of a plurality of slave controllers in a buffer register respectively;
the receiving data to be transmitted broadcast by the plurality of slave controllers from the plurality of slave controllers, respectively, to be written to the buffer register of the master controller includes: respectively writing the data to be transmitted broadcasted by the plurality of slave controllers into the buffer registers of the master controller and the storage columns corresponding to the plurality of slave controllers;
receiving data to be transmitted broadcast by the master controller and the plurality of other slave controllers from the master controller and the plurality of other slave controllers, respectively, to write to the buffer registers of the controllers includes: and respectively writing the data to be transmitted broadcasted by the master controller and the other slave controllers into storage columns, corresponding to the master controller and the other slave controllers, in a buffer register of the controller.
In some embodiments, when the master controller broadcasts the data to be transmitted of the master controller to the plurality of slave controllers, the master controller also calculates the check data of the data to be transmitted, and broadcasts the check data to the plurality of slave controllers along with the data to be transmitted; the method comprises the steps that when the master controller receives data to be transmitted broadcasted by the slave controllers from the slave controllers respectively, the master controller also receives check data of the data to be transmitted, the data to be transmitted are checked based on the check data, and the loss of the transmission data is determined in response to the failure of the check;
when the controller broadcasts the data to be transmitted of the controller to the main controller and the plurality of other slave controllers, the controller also calculates the check data of the data to be transmitted, and broadcasts the check data to the main controller and the plurality of other slave controllers together with the data to be transmitted; the controller receives data to be transmitted broadcast by the master controller and the plurality of other slave controllers from the master controller and the plurality of other slave controllers, respectively, and also receives verification data of the data to be transmitted, verifies the data to be transmitted based on the verification data, and determines that the transmission data is lost in response to a verification failure.
As can be seen from the foregoing embodiments, in the controller sharing synchronization apparatus provided in the embodiments of the present invention, the baseboard management controllers of the master controller and the slave controllers respectively load the data to be transmitted of the master controller and the slave controllers to the buffer registers of the master controller and the slave controllers; broadcasting the data to be transmitted of the master controller to the plurality of slave controllers by the master controller through the shared bus, and respectively receiving the data to be transmitted broadcasted by the plurality of slave controllers from the plurality of slave controllers through the shared bus by the master controller so as to write the data to be transmitted into a buffer register of the master controller; the complex programmable logic device of the master controller sequentially sends data synchronization requests to each slave controller through a shared bus; in response to a slave controller receiving a data synchronization request, the controller broadcasts data to be transmitted of the controller to the master controller and a plurality of other slave controllers through a shared bus, and the controller receives the data to be transmitted broadcast by the master controller and the plurality of other slave controllers from the master controller and the plurality of other slave controllers through the shared bus respectively so as to write the data to a buffer register of the controller; the technical scheme that the master controller and the slave controllers respectively process the data obtained from the buffer registers of the master controller and the slave controllers to realize data sharing and synchronization can release BMC resources from data sharing and synchronization and improve the response speed of data transmission.
It should be noted that, the above embodiment of the controller-shared synchronization apparatus adopts the embodiment of the controller-shared synchronization method to specifically describe the working process of each module, and those skilled in the art can easily think that these modules are applied to other embodiments of the controller-shared synchronization method. Of course, since the steps in the embodiment of the controller-sharing synchronization method can be mutually intersected, replaced, added, or deleted, these reasonable permutations and combinations should also fall within the scope of the present invention, and should not limit the scope of the present invention to the embodiment.
The foregoing are exemplary embodiments of the present disclosure, but it should be noted that various changes and modifications could be made herein without departing from the scope of the present disclosure as defined by the appended claims. The functions, steps and/or actions of the method claims in accordance with the disclosed embodiments described herein need not be performed in any particular order. Furthermore, although elements of the embodiments of the invention may be described or claimed in the singular, the plural is contemplated unless limitation to the singular is explicitly stated.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant only to be exemplary, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; within the framework of embodiments of the invention, also combinations between technical features of the above embodiments or different embodiments are possible, and there are many other variations of the different aspects of the embodiments of the invention described above, which are not provided in detail for the sake of brevity. Therefore, any omissions, modifications, substitutions, improvements, and the like that may be made without departing from the spirit and principles of the embodiments of the present invention are intended to be included within the scope of the embodiments of the present invention.
Claims (10)
1. A controller sharing synchronization method is characterized by comprising the following steps of circularly executing:
loading data to be transmitted to respective buffer registers by the baseboard management controllers of a master controller and a plurality of slave controllers which are connected to a shared bus in parallel;
broadcasting data to be transmitted to a plurality of slave controllers by the master controller through the shared bus, and respectively receiving the data to be transmitted broadcast by the slave controllers by the master controller through the shared bus to write the data to be transmitted into a buffer register of the master controller;
the complex programmable logic device of the master controller sequentially sends data synchronization requests to each slave controller through the shared bus;
in response to receiving the data synchronization request from a slave controller, broadcasting, by the slave controller, data to be transmitted to the master controller and a plurality of other slave controllers via the shared bus, and receiving, by the slave controller, the data to be transmitted broadcast by the master controller and the plurality of other slave controllers via the shared bus, respectively, to write to buffer registers of the slave controllers;
enabling one master controller and a plurality of slave controllers to respectively process the data obtained from the buffer registers of the master controllers so as to realize sharing and synchronization of the data.
2. The method of claim 1, wherein the issuing, by the complex programmable logic device of the master controller, data synchronization requests to each of the slave controllers in turn comprises:
determining, by the master controller, request periods, and waiting at least one request period to issue the data synchronization request to a next one of the slave controllers after issuing the data synchronization request to one of the slave controllers.
3. The method according to claim 1, wherein each of the buffer registers is configured to have a plurality of storage columns, and the plurality of storage columns are in one-to-one correspondence with one master controller and a plurality of slave controllers;
the method for loading the data to be transmitted to the respective buffer registers by the baseboard management controllers of the master controller and the plurality of slave controllers which are connected to the shared bus in parallel comprises the following steps: and loading the data to be transmitted to the storage columns corresponding to the master controller or one of the slave controllers in the buffer registers respectively.
4. The method of claim 3, wherein receiving, by the master controller via the shared bus, the data to be transmitted broadcast by the plurality of slave controllers, respectively, to write to buffer registers of the master controller comprises: respectively writing the data to be transmitted broadcasted by the plurality of the slave controllers into the storage columns, corresponding to the slave controllers, in the buffer register of the master controller;
receiving, by the slave controller via the shared bus, respectively, data to be transmitted broadcast by the master controller and a plurality of other slave controllers to write to buffer registers of the slave controller comprises: and respectively writing the data to be transmitted broadcasted by the master controller and the other slave controllers into the storage columns, corresponding to the master controller and the other slave controllers, in the buffer registers of the slave controllers.
5. The method of claim 1, further comprising:
when the master controller broadcasts the data to be transmitted to the plurality of slave controllers through the shared bus, calculating the check data of the data to be transmitted, and broadcasting the check data to the plurality of slave controllers together with the data to be transmitted;
the method comprises the steps that while data to be transmitted broadcasted by a plurality of slave controllers are respectively received by the master controller through the shared bus, checking data of the data to be transmitted is also received, the data to be transmitted is checked based on the checking data, and transmission data loss is determined in response to checking failure;
when the slave controller broadcasts the data to be transmitted to the master controller and a plurality of other slave controllers through the shared bus, the slave controller also calculates the check data of the data to be transmitted, and broadcasts the check data to the master controller and the plurality of other slave controllers together with the data to be transmitted;
the method comprises the steps that while data to be transmitted broadcasted by the master controller and a plurality of other slave controllers are respectively received by the slave controllers through the shared bus, checking data of the data to be transmitted is also received, the data to be transmitted is checked based on the checking data, and transmission data loss is determined in response to checking failure.
6. The method of claim 1, wherein the shared bus comprises a first bus and a second bus; transmitting via the shared bus comprises:
simultaneously transmitting on the first bus and the second bus, and asserting a transmission success in response to the transmission data being the same on the first bus and the second bus, and asserting a transmission failure in response to the transmission data being different on the first bus and the second bus.
7. The method of claim 1, wherein the buffer registers of one of the master controller and the plurality of slave controllers are registers of the complex programmable logic devices of the one of the master controller and the plurality of slave controllers.
8. A controller-shared synchronization apparatus, comprising:
a processor; and
a memory storing program code executable by the processor, the program code when executed and looping to perform the steps of:
loading data to be transmitted to respective buffer registers by the baseboard management controllers of a master controller and a plurality of slave controllers which are connected to a shared bus in parallel;
broadcasting, by the master controller, data to be transmitted to the plurality of slave controllers via the shared bus, and receiving, by the master controller, the data to be transmitted broadcast by the plurality of slave controllers via the shared bus, respectively, to write to buffer registers of the master controller;
the complex programmable logic device of the master controller sequentially sends data synchronization requests to each slave controller through the shared bus;
in response to receiving the data synchronization request by a slave controller, broadcasting by the slave controller to the master controller and a plurality of other slave controllers via the shared bus, and receiving by the slave controller via the shared bus the data to be transmitted broadcast by the master controller and a plurality of other slave controllers, respectively, to write to buffer registers of the slave controller;
and enabling one master controller and a plurality of slave controllers to respectively process the data obtained from the buffer registers of the master controllers so as to realize sharing and synchronization of the data.
9. The apparatus according to claim 8, wherein each of the buffer registers is configured to have a plurality of storage columns, and the plurality of storage columns are in one-to-one correspondence with one of the master controllers and a plurality of the slave controllers;
the method for loading the data to be transmitted to the respective buffer registers by the baseboard management controllers of the master controller and the plurality of slave controllers which are connected to the shared bus in parallel comprises the following steps: loading the data to be transmitted onto the storage columns corresponding to one master controller or one of a plurality of slave controllers in the buffer registers respectively;
receiving, by the master controller via the shared bus, respectively, data to be transmitted broadcast by a plurality of the slave controllers to write to buffer registers of the master controller comprises: respectively writing the data to be transmitted broadcasted by the plurality of slave controllers into the buffer registers of the master controller and the storage columns corresponding to the plurality of slave controllers respectively;
receiving, by the slave controller via the shared bus, respectively, data to be transmitted broadcast by the master controller and a plurality of other slave controllers to write to buffer registers of the slave controller comprises: and respectively writing the data to be transmitted broadcasted by the master controller and the other slave controllers into the storage columns, corresponding to the master controller and the other slave controllers, in the buffer registers of the slave controllers.
10. The apparatus of claim 8, wherein the steps further comprise:
when the master controller broadcasts data to be transmitted to the plurality of slave controllers through the shared bus, calculating check data of the data to be transmitted, and broadcasting the check data to the plurality of slave controllers together with the data to be transmitted;
the master controller receives data to be transmitted broadcast by the slave controllers through the shared bus, receives check data of the data to be transmitted, checks the data to be transmitted based on the check data, and determines that the transmitted data is lost in response to a check failure;
when the slave controller broadcasts the data to be transmitted to the master controller and a plurality of other slave controllers through the shared bus, the slave controller also calculates the check data of the data to be transmitted, and broadcasts the check data to the master controller and the plurality of other slave controllers together with the data to be transmitted;
the slave controller receives data to be transmitted broadcast by the master controller and a plurality of other slave controllers via the shared bus, respectively, and also receives check data of the data to be transmitted, checks the data to be transmitted based on the check data, and determines that the transmission data is lost in response to a check failure.
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